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https://issues.apache.org/jira/browse/S4-65?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13411152#comment-13411152
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Aimee Cheng commented on S4-65:
-------------------------------
There are some questions I met:
1. For the third one in description: "how many S4 nodes are running, how many
S4 nodes are in standby", it seems the standby nodes didn't register
information in Zookeeper, and they only listen the change of znode. So maybe
need to add some information to zookeeper, or are there some other ways to get
the information of standby nodes?
2. When publishing streams, I saw the information on consumer/publisher as
follow:
get /s4/streams/names/consumers/consumer-0000000002
{
"id": "names/cluster1/-1",
"simpleFields": {
"appId": "-1",
"clusterName": "cluster1"
},
"listFields": {},
"mapFields": {}
}
I am confused by the appId in "-1". Though from S4-71 I saw that there would be
only 1 app running in a subcluster and I can get the app name when know the
cluster name, I want to know the meaning of appId here.
> Create s4 status command
> ------------------------
>
> Key: S4-65
> URL: https://issues.apache.org/jira/browse/S4-65
> Project: Apache S4
> Issue Type: Sub-task
> Affects Versions: 0.5
> Reporter: Matthieu Morel
> Assignee: Aimee Cheng
> Fix For: 0.5
>
>
> We should have an "s4 status" command that provides nicely formatted
> information about the state of S4 application coordinated through a given
> Zookeeper ensemble.
> In particular:
> - which applications are deployed
> - on which S4 nodes these applications are deployed
> - how many S4 nodes are running, how many S4 nodes are in standby
> - which streams are published, which applications are connected
> The implementation would probably add a new class in the s4-tools project.
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